Pattern chain control mechanism for gauge looms



Sept. 26, 1961 o. J. PARK ET AL 3,001,552

PATTERN CHAIN CONTROL MECHANISM FOR GAUGE LOOMS 4 Sheets-Sheet 1 Filed July 24, 1959 i m F INVENTORS QQQIN J. pAQK &

BAsIL. L). Co-rueuz ATTQQMEY Sept. 26, 1961 J, PARK ET AL 3,001,552

PATTERN CHAIN CONTROL MECHANISM FOR GAUGE LOOMS Filed July 24, 1959 4 Sheets-Sheet 3 66 Ml 24 INVENTORS 022m! J. PAQK Q BAAL u. COTNEFZ ATTO ZN EY Sept. 26, 1961 o. J. PARK ET AL 3,001,552

PATTERN CHAIN CONTROL MECHANISM FOR GAUGE LooMs Filed July 24, 1959 4 Sheets-Sheet 4 INVENTO 022m J. DARK BASH. U. COTNER W ATTOIZN EY United States Patent 3,001,552 PATTERN CHAIN CQNTROL MECHANISM FOR GAUGE LOOMS Orrin J. Park and Basil U. Cotner, Bloomsburg, Pm, as-

signors to The Magee Carpet Company, Bloomsburg, Pa., a eorporation of Pennsylvania Filed July 24, 1959, Ser. No. 829,409 7 Claims. (Cl. 1139-46) This invention relates to a pattern chain control mechanism for gauge looms.

The mechanism is particularly designed for use with a gauge loom such as disclosed in Patent No. 2,896,671, issued July 28, 1959, wherein a series of yarn carrying arms are mounted on an oscillating shaft which is shiftable longitudinally to move the arms back and forth across the gauge wires. It is an object of the present invention to provide a pattern controlled mechanism for varying the shifting movement of the oscillating shaft to cause the yarn carrying arms to be carried successively over a series of wires in one direction and then back over the same wires or cause the arms to be carried over two or more wires in one direction and then back over the same wires depending on the design of the weave.

A further object of the invention resides in providing means for shifting the shaft supporting the yarn carryingarms of a gauge loom which is actuated by a pair of pattern chains to control the shifting of the shaft to produce weaves of various designs.

A still further object of the invention resides in pro viding a pattern chain mechanism for controlling the shifting of the yarn carrying armsback and forth across the gauge wires which is operable in synchronism with a mechanism for oscillating the arms to carry the yarns down into the fabric being woven.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

FIG. 1 is a perspective view of the pattern chain mechanism applied to a gauge loom,

FIG. 1-A is a detail perspective view of the bell crank lever and pattern chains for actuating the same,

FIG. 2 is a horizontal sectional view taken on line 2-2 of FIG. 1,

FIG. 3 is a vertical sectional view taken on line 3-3 of FIG. 2,

FIG. 4 is a vertical sectional view taken on line 4-4 of FIG. 3,

FIG. 5 is a vertical sectional view taken on line 5-5 of FIG. 3, and,

FIG. 6 is an enlarged sectional view taken on line 6-6 of FIG. 5.

Referring to the drawings, the numeral 5 denotes the frame of a gauge loom having a series of spaced longitudinal gauge wires 6 and a series of yarn carrying arms or fingers 7 for carrying the pile yarns 8 down between the gauge wires into the fabric being woven. The arms 7 are mounted in a bar 8' connected by brackets 9 to shaft 10 mounted to oscillate in bearings 11 carried by a plate 12 slidably mounted in a track 13 mounted on a cross bar 14. A connecting rod 15 extending longitudinally from one end of the plate 12 extends through a bearing 16 at one end of a bell crank lever 17 pivotally mounted on platform 36, as at 18. Coil springs 19 mounted on rod 15 on opposite sides of bearing 16 are held under tension by nuts 20 and yieldably connect the lever and connecting rod together. A roller 21 rotatably mounted on the opposite end of lever 17 is disposed between a pair of drums 22 and 23 which support one end of endless pattern chains 24 and 25. The drums are fixedly mounted on parallel shafts 26 and 27 journaled in bearings 28 and 29 mounted on platform 30 attached to the loom frame 5. A pair of meshing spur gears 31 and 32 are fixedly mounted on shafts 26 and 27 being spaced from the drums by bosses 33 and 34 formed on the drums. A ratchet wheel 35 is fixedly mounted on shaft 26 on the opposite side of the drum to that of the gear 31 and along the side of the ratchet wheel is a ratchet lever 36 having one end rotatably mounted, as at 37, on shaft 26. A pawl 38 pivotally mounted, as at 39, on the side of lever 36 is yieldably held in engagement with the teeth of ratchet wheel 35 by a spring 40. To prevent any back lash of the ratchet wheel, a second pawl 41 mounted on bracket 42 is held by spring 43 in locking engagement with the teeth of the ratchet wheel. The free end of ratchet lever 36 is pivotally connected, as at 44, to the end of piston rod 45 having a piston at its opposite end slidably mounted in air cylinder 46, one end of which is pivotally mounted, as at 47, on a bracket 48. Air conduits 49 and 50 extending from the ends of air cylinder 46 are connected with an air supply line 51 by a four way valve 52 which controls the passage of air to and from the air cylinder. The valve 52 is actuated by a cam wheel 53 mounted on drive shaft 55 which has a series of adjustable lugs 54 around its periphery. A second cam wheel 56 is mounted on shaft 55 having lugs 56' for engagement with cam roller 57 carried by rock lever 58 pivotally mounted at one end, as at 59. The free end of rock lever 58 is connected by connecting rod 60 to crank arm 61 mounted on the end of shaft 10 and to allow for limited longitudinal series of arcuate links 63 having a bifurcation 64 at one end and tongue 65 at the opposite end, with the tongue of each link having interfitting engagement with the bifurcation of the next adjacent link and pivotally connected thereto by a pivot pin 66. The pivot pins 66 project beyond the sides of the chain and engage in notches 67 formed in the flanges 68 of the drum supporting the pattern chain. The radius of the outer curvature of the links varies, and the links of one chain are positioned so the high points of the links coincide with the low points of the links of the other chain thus causing a reciprocating motion to be imparted to roller 21, the length of the stroke depending on the curvature of the links that contact the roller as the pattern chains are moved by rotation of the drums. The lower ends of the pattern chains are trained around sheaves 69 adjustably mounted in slots 70 in brackets 71, and the pattern chains may be constructed of various lengths depending on the pattern.

In operation, the cam wheel 56 upon rotation rocks lever 58 which through connecting rod 69 actuates crank arm 61 to oscillate shaft 10 thereby swinging the yarn carrying arms 7 downwardly and upwardly between the gauge wires 6. As the arms 7 swing down into the fabric being woven the pile yarns 8 are woven into the fabric. Upon upward movement of arms 7 the cam wheel 53 has been rotated to bring one of the lugs 54 into actuating engagement with the valve 52 to open the valve to admit air into one end of air cylinder 46 whereby piston rod 45 is reciprocated to move ratchet lever 36 to turn ratchet wheel 35 to rotate drum 22 which through spur gears 31 and 32 rotates drum 23 in a direction opposite to that of drum 22. The rotation of drums 22 and 23 cause the links 63 of pattern chains 24 and 25 to be brought into contact with roller 21 to swing bell crank lever 17 and reciprocate plate 12, thereby causing the yarn carrying arms 7 to be shifted to one side or the th yarnsusuccessivelyover aise'r'ies--of:gauge':wires monodirectioniand then carrythe :yarns-ina reverse directionoverzthe sanrdgaugerwirese. By:=providinggthe pattern chains :with links .of: varying; curvature, thea shifting:.ofthe-yarn. carrying-arms-Sbacloand forth over th'e gaugc wires :may be controlled to pro'duce a -NarietYE'of pat 1 5 terned .weavesn It is to he understood the form of :the imlention here-r in.'r.-shown :and described is a preferred example oi the r sameandachanges in: the -shap1e;.sizeandearrangementi of ttheapa-rts maybe made withoutZdepartingsfromt'the 2 sp'iritrof the invention or :scope ota the claims:

Having thus described our: -invention',ewe'=c1aim2o i; Az pattern control mechanism-tfor gauge ioofnsihav ingegangeswires and yarnscarryingsarrns tfor carryin'g the i yarns down between the r gauge wires :into thefabrionbeing Woven comprising .:a :reciprocating-= oscillatingnshaft 811135 porting the yarn carrying arms; a =pair offipattern chain havin'gamating :linlisiof varying curvature; a--rock 'leve'r. havingsone .end connected Ito Isaidshaft-and its :opposit':

end-1.; disposed between isaid :patterne chains; means':'. for

drifting said-pattern chains: to impart movement :towsaid i roclcslever and vary the stroke of saidvshafh: andimeans operable in synchronisrn with saidipatternr'chai ns td os'cila-vlateisaid shaft.

2.4:A pattern control; mechanism for gauge looms havin g..-'igau'gei Wires and yarn carrying-laws :for "carrying-2 the :yarns down between thesgau'ge 'gwires iinto the fabric: being woven comprising a reciprocating oscillatingjshaft: supporting the yarn :carryingsarms, .atpair ofs rotatable drums; means for rotating said I'drunis-,'Ia rock-lever hav'- 40 ingone .end connected :to sai'd shaft and tsi oppositeeend disposed: between said: drums, pattern-: chains '5 trained: aronn'dvsaid drumshaving linksaof waryingscurvatiire in contactiwith the end .of' said l'leverifor impartingw-movementeto the lever to reciprocate said shaft-, v and I mea'ns operable in synchronism rwithsaid=ipattern chains to oscillate said shaft. i

3 .7 A pattern 2 control mechani'smior gauge ioomsi hav ingi'gauge Wires and yarn-marrying iarms',z'..comprising as reciprocating and oscillating shaft?isuppr'srtingv t the yarn i carrying arms, means .for oscillating' said shaft. to swing 1; the; arms to carry the yarns down: between the gauges wiresainto the fabric :being iwoven,1za.1pair of rotatable:' drums having v their peripheries disposed in spaced .-rela-:- tion, patternchains trainediaround saiddrumsiand rock-lever having oneendconnectedlmsaid shatt and its opposite end disposed "between said pattern chains and actuated by, the links of saidchainsto reciprocatesaid shaft.

4-. A pattern control mechanism for gauge looms having gauge wires and yarn carrying arms comprising a reciprocating and oscillatingashaft supporting the yarn carryingiarrns, means-ionoscillating 'saidshaft to swing the arms to carrythe-yarns-"downbetween the gauge wires into I the fabric being Woven, a p'ai'rof parallel shafts, drums fixedly'mounted on said paifof shafts with their pcripheries in spaced relation, Lintermeshing spur gears fixedlyrmounted on said pair of shafts, pattern chains trained around said drums, a rock lever having one endconnected to said shaft and its opposite .end disposed between and actuated by the linksofisaidchains:

tovreciprocatesaid shait, a lever for turning'sone'of :said

pair of :shafts,- and meanseior actuating- 1: said leverin synchronism withsaid--mean's-1for oscillating said first.-

- mentioned-shaft.

5. A pattern -control mechanism rfor zgange loonrs :as described in claixnA :wherein said lastmentionemmeans includes :anfiair cylinder havinga -piston connected to said levenua-vah'e tocontroi the. admission ofair-to said cylinden. toreciprocate said piston, and". a earn 1 for-actuating:-

said valvei 6. pattern control-mechanism. for gauge looms :hav ing, gangs .wiresand yarn-.-carrying iarms comprising 1; a reciprocating and-oscillating. shaft supporting the :yarn v carryingiarms, means for -oscillating;,-said shaft to swing thearmsto carryhthe yarns down .-between the- 'gauge. wireszinto the -.tabric, being-qvvoven, a pivotallymounted: bell crank lever havingsone --end connected to said shaft,-; a roller mounted on the opposite end ofsaid bellcrank lever, a :pair of rotatable drums having their -peripheries inspaced' relation-and-disposedbmopposite sides --ofperiphery of said roller, pattern chains trainedaround said drumshaving matingslinl-rs in engagement with" said a roller .for: actnating said. belicranis lever, and means-for rotating said drums in opposite-directions tmdr-ive saidt patternchains.

7. A patter-m control .mechanismfon gauge looms as described= in c1aim:-6 wherein said last-mentioned --means inclndes aratchet wheel attached to one of said drums a ratchet lever for turning said ratchet wheel, an air cylinder having a reciprocatingpistonconnected to said ratchet lever, a valve to control the admission ofair to sairLcylinder to reciprocate said piston and a cams-for actuating said valve.

References Cited in the file -of this patent" UNITED STATES PATENTS 1,100,750 Lindley June 23, 1914" 1,165,294 Springtho'rpe"- Dec: 21, 1915 2,087,449 Rice et a1. .Tuly 20, 1937 2,860,665 Mac Isaac etali- Nov: 18, 1958 2,884,012 Hoeselbarth Apr. 28, .19'59" 

